Lubricator.



PATENTED JAN. 3, 1905. r. J. HART. I LUBRIGATOR. APPLICATION I ILED JAN. 7, 1904.

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. v.frzveza or". /q wdig/ fivrngo PATENTED JAN. 3', 1905.

T. J. HART. LUBRIGATOR.

APPLIUATIOK FILED JAN. 7, 1904.

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' ilnrren STATES Patented January 3, 1905.

PATENT OFFICE.

THOMAS J. HART, OF BUFFALO, NEW YORK, ASSIGNOR TO SHERWOOD I MANUFACTURING COMPANY, OF BUFFALO, NEW YORK, I I

Lueeioa'ron.

SPECIFICATION forming part of Letters Patent-N0. -779,039, dated. January 3,1905. Application filed January 7,- 1904. serial No. 188,100.

To all whom it may concern:

Be it known that I, THOMAS J. HART, a citizen of the United States, residing at Buffalo, in the county of Erie andState-of New York, have invented new and useful Improvements in Lubricators, of which the'followingis-a specification. j

This invention relates more particularly to a lubricator of that type in which a pump is IO employed which takes the lubricant from a reservoir or source of supply and forces it to the part to be lubricated.

Theobject of the invention is to provide .a lubricator of this type of simple and desirable I5 construction in which the feed of the lubri-' is taken from a reservoir or supply source by,

a pump and forced up into an auxiliary reservoir, from which it is taken by said pump and forced to the part to be lubricated, the supfeed.

In the accompanying drawings, consisting of two sheets, Figure 1 is a vertical sectional elevationof a-lubricator embodying the invention. Fig. 2-is a horizontal section thereof in line 2 2, Fig. 1. Fig. 3 is a plan view of the reservoir with the cover removed. Fig. 4 is a section through 'the pump-operating mechanism in, line 44, Fig. 2. Fig.- 5 is a section through the friction-clutch. in line 5 5, Fig. 4. Fig. 6 is a vertical sectional elevation of a modified construction.

Like letters of reference refer to like parts in theseveral figures.

Referring particularly to Figs. 1 to 5, A represents a lubricant-reservoir or supply-receptacle, which is preferably in the.form of the ordinary oil-cup, composed of a base a, a

.5 top ring or ortion a, connected to the baseply passing down through a sight tube or chamber, which enables an inspection of the by a central column a and a hollow glass or transparent body portion a, clamped between thebase and the top .ring. The top ring is provided 'with arms 6, radiating from a-central hub, which is hollow and surrounds a reduced upper portion of the central column, to which it is rigidly clamped betweena nut 6', working on the threaded upper end of the column, and a shoulder atthe base of the reduced portion of the column. 0 represents a reservoir cap which is screwed upon the threaded upper end of the column, and o a strainer for the lubricant, which is preferably clamped between the top ring. and body of the reservoir. These parts may be of any other '6 5 suitable construction for instance, as shown in the construction illustrated. in Fig. 6. D represents the pump-cylinder, and Ea piston or plunger which is arranged to reciprocate in the cylinder. The cylinder is formed integrally with the base of the lubricant-reservoir and extends diametrically across the same. The cylinder has a main piston-chamberd and an auxiliary piston-chamber d, preferably of smaller diameter than and in line with the main piston chamber. The plunger is provided with a piston or portion which works in the main piston-chamber and with anauxiliary piston or portion which fits and works in the auxiliary piston-chamber. The two pistonchambers are preferably separated by a packing-gland e, surroundingthe auxiliary piston.

f represents one or more induction or inlet ports for admitting the lubricant from the reservoir into the main piston-chamber inter 5 mediate of its ends. While the pump-cylinder shown constitutes a part of the supply-v reservoir and communicates directly therewith bythe port f, this construction is not essential, for the cylinder can be independent 9 ofthe reservoir'and connected witha distant source of supply. The column is hollow and constitutes a stand-pipe for the' lubricant. The stand-pipe communicates at its lower end with the forward end of the mainpistonv chamber by a port g, controlled bya gravity valve g, and its upper end communicates by lateral passages with an annular chamber g formed between the reduced upper end of the stand-nine and the hub of-the top ring of the Irc reservoir. Qne of the radial arms of the top ring is hollow or provided with a supply-passage H, which connects at its inner end with upper end with a knurled head or the like for turning it and a nut for looking it in adjusted positions. The valve-chamber constitutes an integral part of the top ring of the reservoir.-

The nozzle K extends down into the upper end of a vertical tube or chamber L,the lower end of which communicates through a .passage Z and port Z, formed in the base of the reservoir, with the auxiliary pistonchamber d of the pump. The vertical tubeis preferably transparent and forms a sight-tube enabling the attendant to see at all times whether or not the lubricant is properly feeding. It is provided at its upper end with a vent-hole Z M represents a nipple for the attachment of a discharge-pipe leading to the part to be lubricated. The nipple is connected to the reservoir-base by a suitable union and connects by a passage m with the front end of the auxiliary piston-chamber of the pump. The passage Z, leading from the lower end of the sight-tube, is controlled by an upwardlyseating ch eck-valve N, and the passage m, connecting the front end of the pump-cylinder with the discharge-pipe, is controlled by an inwardly-seatingcheck-valve O. Ball-valves are shown which are moved to their seats by suitable springs.

The pump-plunger is reciprocated by suitable means, and at each rearward movement the main piston drawsaquantity of lubricant from the reservoir through the induction-port f into the main piston-chamber and upon the forward stroke the lubricant so drawn into the piston-chamber is forced into the standpipe past the check-valve atits lower end. The lubricant accumulates in and fills the standpipe and supply-passage H, which thus' constitute a supplemental reservoir or supply-receptacle which is kept filled to the same extent regardless of the quantity of lubricant in the main reservoir. When the regulatingvalve 1 is off of its seat, the lubricant will drop or flow from thenozzle K down through the sight-tube, and at each rearward movement of the auxiliary pump-piston a predetermined quantity of lubricant will be drawn past the check-valve N into the auxiliary piston-chamber and forced past the check-valve 0 into the pipe leading to the part to be lubricated.

The quantity of lubricant fed by the piston can be regulated accurately by the adjustment of thehand-controllingvalve I without alterpump will .circulate the. lubricant from the reservoir through the stand-pipe and returnpassage back to the reservoir. As the lubricant is fed from the stand-pipe to the part to be lubricated the quantity fed is in no wise dependent on or affected by the changes in quantity and weight of the lubricantin the reservoir, and the feed is always constant. If the engine or machine being lubricated is stopped, the pump will come to rest and there can be no waste of lubricant by gravity from the reservoir whether or not the attendant neglects to close the regulating-valve. As the lubricant is drawn positively from the sighttube by the pump the oil cannot fill the tube and cloud the glass. and thus prevent the inspection of the feed. Any suitable speed reducing mechanism may be employed for connecting a moving part of the engine or machine to be lubricatedwith the pump piston or plunger to reciprocate the latter. The mechanism shown in the drawings for this purpose is constructed as follows: The stem of the pump-plunger extends rearwardly througha suitable. packinggland p on the cylinder and'is guided in a bearing 10' on a bracket or arm P, projecting from the reservoir-base. The bearing-arm is perforated at its inner end and engaged over a depending central stud on the reservoirbase, on which it is secured by a nut p screwed on the threaded endof the stud. The nut 12 is also threaded and serves for securing the reservoir stationarily on a suitable support. The bearing-arm is also'secured' to the reservoir-base by a screw 9. Q represents a shaft journaled to rotate in a bearing g on the bearing-arm P and having formed therewith or secured thereto a crank-wheel provided with a crank-ping, which enters a transverse slot 1' in a collar R, adjustably secured on the operating-rod which is secured to the clutchcasing and is connected in any suitable man ner to and operated by the engine or machine being lubricated. The end of. the shaft Q is also preferably squared for the engagement of a crank or tool, whereby the shaft and pump can be operated manually when desired.

While the invention is described in connection with a lubri'cator, it may be used for other ervoir.

steam-boiler or the like.

The lubricator shown in Fig. 6 is'similar to that above described except in details of construction and in the fact that the stand-pipe U and horizontal supply-passage-'Hv consist of separate pipes instead of being foriiied by the central column and top ring-arm of the res- I claim as my inventionfor the liquid, a pump whichcommunicates with andtakes the liquid from said reservoir, a stand-pipe arrangedwitliin said reservoir and into which said pump forces the liquid taken from said reservoir, a sight-tube arranged exteriorly of said reservoir, a part having a passage connecting the upper portion of the sight-tube with said stand-pipe, there being a valved communication between the lower end of said sight-tube and said pump, whereby said pump draws the liquid from the lower "end of said sight-tube, and means provided with a discharge-passage through which said pump forces the liquid taken'from said sight tube, substantially as set forth.

2.. The combination of a supply -reservoir for the liquid, a pump which communicates with and takes the liquid'fromsaid reservoir,

a stand-pipe arranged within said reservoir and into. which said pump forces the liquid taken from said reservoir,'a sight-tubearranged exteriorly of said reservoir, a part having a passage connecting the upper por;

tion of the sight-tube with said stand-pipe,'" there being a valved communicationbetween the lowerend of the sight-tube and said pump,

whereby said pump draws the liquid from the lower end of said sight-tube, and means'provided with a discharge-passage through which said pump forces the liquid taken 'from. said sight-tube, the upper end of said stand-pipe being connected with a passage'forreturning the overflow liquid to said reservoirgsubstanj tially as set forth. i

3., The combination of a g for the liquid, a pump having a piston-charm ber ormedin the base of saidreservoiri and whic has an inlet-port communicating with said reservoir,; and a second pistoh1chamber, a stand-pipearranged within said'reservoirand haying a valved communication at its lower end with said first-mentioned pistonchamber, a vertical sight-tube'farran'ged exstantially as set forth.

supply-reservoir the. communication between said sight-tube and said passage, means provided with a discharge passage, and a double pump-piston 5 working in said piston-chambers and which draws the liquid from saidreservoir, forces it up into said stand-pipe, draws it from said sight-tube, and forces it through said dis I charge-passage, substantially as set forth. 1. The combination of a supply-reservoir.

.7 4. The combination of a supply-reservoir for the liquid having a hollow column which connects parts of the reservoir and constitutes a stand-pipe for the liquid, a pump which communicates with'anil akes the liquid from 75. said reservoir and for es it into said standpipe, a sighttube comniunicating at its upper portion with the upper portion of said standpipe and at its lower end with said "pump v whereby the latter drawsthe liquid from said '0 sight-tube, and means provided with a dis-' charge-passage throughwhich the pump forces the liquid taken from said sight-tube, sub- 5; The combination of a supply-reservoir for the liquid having upper and lower detach- V able parts and a hollow column which connects said parts of the reservoir and constitutes a stand-pipe for theli'quid, a'sight-tube communicatin at its upper portion with the upper ing it to said staud:pipe,and'taking the liquid .from the lower-portion .of-said sight-tube and feedingv itto-another part,- i s ubstantially as set v forth.

6. The combination of a supply-reservoir, 'for the liquidconsisting of a base, a top ring, and a body, a hollow-column connecting said base and top' ring and constituting a stand .pipe for thef liquid, a sightitube, said top ring having a passagefconnecting the'gupper portion of said sight-tube with theupper-portion of said stand-pipe, and means for taking the liquid fromsa'id reservoir delivering it to the 1 5 stand-pipet aiid' taking the {liquid from said {sight-tube and ffeedingj it "to another part,

substantially asset forth.

'1' ,Witnesstny hand this 30th day'of Decem- 'ber, 1903.

. g THOMAS J. 'HART. Witne sses:

JNo." J. BONNER,"

I O. M. BENTLEY. 

